Process and apparatus for recovering and recondensing gasolene, naphtha, and the like



G. A. BUBRELL, D. L. VOHESS AND V. C. CANTER. PROCESS AND APPARATUS FOR RECOYERING AND RECONDENSING GASOLENE, NAPHTHA, AND THE LIKE.

AFPLlCATlON FILED JAN-24,1921.

1,382,890. Patented June 28, 1921.

660 Mm, 67y LVWZJFW Wad/2226 [UNITED STATES- PATENT OFFICE.

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AND AIPARAT'US FOB BECOVEBHTG AND BJFCONDEHBDTG GASOLINE,

NAPH'IHA, AND m m Specification 01 Letters Eatent.

Application filed January 24, 1921. Serial 10,489,678.

To all tvhom itmay concern:

Be it known that we, GEORGE Beam,

CLrnn L. Voanss, and VERNON C. Curran,

citizens of the United States whose residences are, respectively, New Tork, county of New Yorlqand State of New York, Brad- .ford, county of McKean, and Stateof Penns lvania,and Bradford,cunty of McKean,

tate of Pennsylvania, have invented certain new and useful Improvements in Processes and Apparatus for'Recovering and Recon- (lensing Gasolene, Naphtha, and the like; and tfihfiy do hereby declare the following to be a clear, andexact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an improved process and apparatus for recovering and recondensing gasolene, naphtha, kerosene,

benzol, toluol, alcohol, ether, acetone, amyl acetate, ethyl alcohol, propyl alcohol; butyl alcohol, chloroform, carbon tertachlorid, ammonia and formaldehyde or any other substance of commercial value amenable to recovery by this process from a solid absorbent by which .it has been absorbed and is being held.

- Methods for the separation and recovery of gasolene and other solid absorbent and the subsequent extraction of said vapors I from the absorbent by heating said absorbout to drive voff the vapors, are known.

The present process contemplates making the distillation under pressure higher than atmospheric when steam is being used as the heating :agent' In one of the methods heretofore mentioned, a gaseous mixture, containi the vapors to be recovered, is passed throng solid absorbent media which extracts or absorbs the vapors from the mixture. The vapors are subsequently distilled from the absorbent media by introducing supass ofi with the steam to the condensers, blenders and separators, which function respectivelv to condense the gas vaporsand steam, blend the condensates formed from the vapors of the gaseous mixtures and separate the aqueous condensate from the gas pheric when steam is being used as the heatmg agent. I

Apparatus suitable for practisin the process consists of an ordinarysteam iler 1, equipped with a superheater 2, of superheating the steam to 550 C. a metal container 3, of any size or shape desired, inclosing a solid absorbent media such as ac- Patented June 28, 1921.

capable tivated charcoal or silica gel, a condenser unit 4 and a separator unit 5.

- In the operation, the valve 6 would be opened and a gas or a mixture of gases containing fractions of commercial value, which are amenable to recovery by this process, are allowed to flow through pipe 7 into absorber 3, where it comes into contact with the solid absorbent, which absorbs and retains all or part of the commercial fractions. The remainder of the gas passes out through pipe 8 and valve 9. When any desired quanti of commercial fractions have been retain valves 6 and 9 are closed and steam from boiler 1 superheated in coiled pipe .2 is introduced into absorber 3 by valve '10. In its passage through absorber 3, it vaporizes the commercial fractions held by the solid absorbent and carries them out through pi 11 and valve 12, into a condenser 4 0 any ordinary type, where the steam as well as part of the volatilized vapors are condensed. The uncondensed vapors, the condensed commercial fractions and the water pass by pipe 13 into separator 5, where a gravimetric separation takes place, the valuable product, which in most cases is lighter than water, will flow out through trap 14 and the water out through trap .15. Traps 14 and 15 are ordinary mechanical automatic traps arranged to have the pressure equalized with that in the top ration in the separation tank when fluctusates to Storage.

condensed vapbrs to a point where they tor 16, which may be set at any desired pressure. By setting thisbaek pressure regulator to discharge at the proper specific pressure, the distillation may be carried out under the pressure desired.

The useof PIGSSHIG in the distillatlons has the following advantages:

1. It permlts the condensation of hghter vapors than could be otherwise condensed a the same temperature without; pressure higher than atmospheric.

2. It permits the use of comic water. of higher temperature than could efiiciently used without pressure 'higher' than atmos heric.

p 3. t prevents lighter condensates being blown from the apparatus from the outlet prepared for the aqueous condensates.

4. It aids blending.

5. It aids in passing 6. It aids in raising the pressure of the unmay be placed in outlet, lines. r

7. It prevents interruption of the sepaations occur in the uncondensed gas flow What we claim and desire tolsecure by Letters Patent is 1. A process of distilling and recondensingvapors from a solid absorbent medium by the use of steam, which consists in distiled and separated under pressure.

5. A process as set forth in claim 1, wherein the condensed vapors after being blended and separated are caused to form static pressure to maintainthe condensates under pressure during distillation.

6'. The pigcess of causing pressure greater than: atmospheric to be applied to vapors I [during distillation, condensation, blending sure eater than atmospheric.

the valuable conde'nbeing applied to a solid absorbent for the purpose of distilling out previously absorbed Vii-IS.

. A process, as described in claim 6,-in'

which the condensation is made under,

8. process, as described in claim 6, in which the blendingis made under pressure greater than atmospheric; 9. A process for recovering vapors from gaseous mixtures containing't e same, which consists. in contactin ilthe mixture containing the vapors with a so 'd absorbent, and separating the vapors from the pressure distillation. J 10. A process for recovering vapors from gaseous mixtures containing the same, which consists in contacting the mixture containing the vapors with a solid absorbent'gwhich extracts the vapors from the-.1i1ixture, introgducing steam into said absorbent to distil hi the vapors, conducting the vapors from bsorbent by the gaseous -mixtnre and the steam away from said absorbent, condensing the major" portion of sald vapors,'separating-the 'condensates from the vapors of the gaseousmixture from the aqueous condensate, and 'main:

taining the vapors under pressure from the start of distillation condensates.- 5 I 11. An apparatus for recovering-"vapors from gaseous mixtures containing the' sam'e comprising an absorption-tower, means "for tothe separating o'i the I 7 at introducing a gaseous' -mixture containing .the vapors to said; tower, means for discharging the gaseous mixture from the'tower, means for generating and introducingsteam into said tower to distil vapors from the same, a condenser operativelyconnectedwith the tower, and designed to receive vapors from the latter, a blending and separating device operatlvely connected with the condenser and receiving condensatesand uncondensed vapors from the latter, and means for maintaining pressure in said tower, condenser and blending and separating'device.

In testimony whereof we aifix our signatures.' GEORGE A. BURRELL.

CLYDE L. voREss; I V VERNON C. CANTER.

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